参数资料
| 型号： | MIC5318-2.8YD5 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.8V .3A TSOT23-5 |
| 标准包装： | 3,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.8V |
| 输入电压： | 最高 6V |
| 电压 - 压降（标准）： | 0.11V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA |
| 电流 - 限制（最小）： | 340mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC5318-2.8YD5TR MIC5318-2.8YD5TR-ND |
Micrel, Inc.
Thermal Considerations
The MIC5318 is designed to provide 300mA of
continuous current. Maximum ambient operating
temperature can be calculated based on the output
current and the voltage drop across the part. Given
that the input voltage is 3.3V, the output voltage is
2.8V and the output current = 300mA.
The actual power dissipation of the regulator circuit
can be determined using the equation:
P D = (V IN – V OUT ) I OUT + V IN I GND
Because this device is CMOS and the ground current
is typically <100μA over the load range, the power
dissipation contributed by the ground current is < 1%
and can be ignored for this calculation:
P D = (3.3V – 2.8V) × 300mA
P D = 0.15W
To determine the maximum ambient operating
temperature of the package, use the junction-to-
ambient thermal resistance of the device and the
following basic equation:
MIC5318
Substituting P D for P D(max) and solving for the ambient
operating temperature will give the maximum
operating conditions for the regulator circuit. The
junction-to-ambient thermal resistance for the
minimum footprint is 100°C/W.
The maximum power dissipation must not be
exceeded for proper operation.
For example, when operating the MIC5318-2.8YMT at
an input voltage of 3.3V and 300mA load with a
minimum footprint layout, the maximum ambient
operating temperature T A can be determined as
follows:
0.15W = (125°C – T A )/(100°C/W)
T A = 110°C
Therefore, a 2.8V application with 300mA of output
current can accept an ambient operating temperature
of 110°C in a 1.6mm x 1.6mm Thin MLF ? package.
For a full discussion of heat sinking and thermal
effects on voltage regulators, refer to the “Regulator
Thermals” section of Micrel’s Designing with Low-
Dropout Voltage Regulators handbook. This informa-
tion can be found on Micrel's website at:
P D(MAX) =
?
?
T J(MAX) - T A
JA
T J(max) = 125°C, the maximum junction temperature of
the die θ JA thermal resistance = 100°C/W.
The table below shows junction-to-ambient thermal
resistance for the MIC5318 in the 6-pin 1.6mm x
1.6mm Thin MLF ? package.
Package
6-Pin 1.6x1.6 Thin MLF ?
θ JA Recommended
Minimum Footprint
100°C/W
Thermal Resistance
September 2010
9
M9999-092810-B
相关PDF资料 |
PDF描述 |
|---|---|
| GMA36DTBH | CONN EDGECARD 72POS R/A .125 SLD |
| GSA36DTBD | CONN EDGECARD 72POS R/A .125 SLD |
| GMA36DTBD | CONN EDGECARD 72POS R/A .125 SLD |
| GMA31DTAD | CONN EDGECARD 62POS R/A .125 SLD |
| MIC5318-1.8YD5 TR | IC REG LDO 1.8V .3A TSOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC5318-3.0YD5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC5318-3.0YD5 TR | 功能描述:低压差稳压器 - LDO 6Vin, Single 300mA ULDO in TSOT-23 5 LD (Lead Free) RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MIC5318-3.0YMT TR | 功能描述:低压差稳压器 - LDO 6Vin, Single 300mA ULDO in 1.6mm x 1.6mm Thin MLF (Lead Free) RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MIC5318-3.3YD5 TR | 功能描述:低压差稳压器 - LDO 6Vin, Single 300mA ULDO in TSOT-23 5 LD (Lead Free) RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MIC5318-3.3YD5-TR | 功能描述:Linear Voltage Regulator IC Positive Fixed 1 Output 3.3V 300mA TSOT-23-5 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:有效 稳压器拓扑:正，固定式 电压 - 输出:3.3V 电流 - 输出:300mA 电压 - 跌落（典型值）:0.11V @ 300mA 稳压器数:1 电压 - 输入:最高 6V 电流 - 限制（最小值）:340mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 供应商器件封装:TSOT-23-5 标准包装:1 |
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